Thanks for more comments and thoughts!
I've heard (and had) planars, not interested in going there at this time. Same with open-baffles and "horns" - not my thing. Though "omnis" such as MBL might not be out of the question, that would require some new consideration.
I've heard the Sabrinas numerous times at shows, and a local dealer, where I also recently heard the new Sabrina X. While the new X definitely isn't in the budget, the Sabrina could potentially be, especially on the previously-owned market. An in-home audition prior to purchasing isn't likely an option, but I've rarely had that opportunity, anyway.
As for going from Harbeth to Wilson, I suppose it is a different direction, which is probably the reason for this thread. Again, appreciate the many thoughts so far.